The Internet News daemon (INN) is arguably the most popular Netnews server in use today. INN is extremely flexible and is suitable for all but the smallest news sites. INN scales well and is suited to large news server configurations.
The INN server comprises a number of components, each with their own configuration files that we will discuss in turn. Configuration of INN can be a little involved, but we'll describe each of the stages in this chapter and arm you with enough information to make sense of the INN manual pages and documentation and build configurations for just about any application.
Very small news sites should consider a caching NNTP server program like leafnode, which is available at http://wpxx02.toxi.uni-wuerzburg.de/~krasel/leafnode.html.